Method of making switch-tie-bar clamps



(No Model.) 2 Sheets-Sheet 1. L. H. EVANS.

METHOD OF MAKING SWITCH TIE BAR CLAMPS. No. 424,052- Patented Mar. 25. 1890.

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V 2 Sheets-Sheet 2, L. H. EVANS. METHOD OF MAKING SWITCH TIE BAR CLAMPS. No. 424,052.- Patented Mar. 25, 1890.

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LOUIS I-I. EVANS, OF CHICAGO, ILLINOIS.

METHOD OF MAKING SWlTCH-TlE-BAR CLAMPS.

SPECIFICATION forming part of Letters Patent No. 424,052, dated March 25, 1890.

Application filed February 9, 1889. Serial No. 299,349- (No model.)

To all whom it may concern:

Be it known that I, LOUIS I-I. EVANS, a citizen of the United States, residing at Chicago, Illinois, have invented a certain new and useful Improvement in Processes of Manufacturing Switch-Tie-Bar Clamps, of which the following is a specification.

These clamps, as is well known, are used to connect a switch-rail to the end of a tie-bar; and the object of my invention is to make such clamps cheaply and simply from pieces of T-rails in the manner hereinafter described and claimed.

In the drawings, Figure 1 represents a side elevation and a vertical cross-section of a piece of steel rail; Fig. 2, similar views of such rail as it appears with the head drawn out and the flange lapped; Fig. 3, similar views of the blank formed by punching or shearing the plate shown in Fig. 2; Fig. 4, a plan view and a side elevation of the completed clamp Fig. 5, a side elevation, partly in section, of a clamp attached to a rail and tie-bar; and Fig. 6, a front elevation of Fig. 5.

A represents the clamp; B, the tie-bar; B, the switeh-rail, and C O and D bolts for fastening the clamp to the rail and tie-bar.

In making my improved clamp I use a piece of steel rail of any suitable length-say about six inches-as shown in Fig. 1. This is then heated, the head drawn out, and the flanges lapped or drawn together until the entire rail is reduced to about the thickness of the web thereof. Fig. 2 represents the plate thus formed. From this plate I. next form by punching or shearing a blank of the form shown in the third figure of the drawings. The upper portion E of this blank is then by means of dies or other suitable machinery turned up to fitthe Web of the switch-rail, as shown at F, Figs. 4, 5, and 6. The center portion G, Fig. 4, is then shaped to fit the base of the rail; and the projecting portions H H in Fig. 3 are bent into a socket to receive the end of the tie-bar, as shown at I, Figs. 4 and 6. The clamp being then drilled to allow of its being bolted to the rail and tiebar is ready for use.

I claim' The method of forming a switch-tie-bar clamp out of a piece of T-rail, which consists in rolling out the head and lapping the flanges of the rail, forming out of the plate thus made a blank having a head E, a body G, and pro jections H H, then bending the head upward into a shoulder F to fit the web of the switchrail, bending the body G to fit the flange of such rail, and, lastly, bending the projections H H to form a socket, substantially as described.

LOUIS H. EVANS.

Witnesses:

GEORGE S. PAYSON,

SAMUEL E. HIBBEN. 

